Push-out window structure



Nov. 24, 1953 F. E. DONATHAN PUSH-OUT WINDOW STRUCTURE 3 Shetg-Sheet 1Filed Aug. 21, 1952 INVENTOR. Fmnczs E. Darmf/mn BY Q I ATTORNEYS Nov.24, 1953 F. E. DONATHAN PUSH-OUT WINDOW STRUCTURE 5 SheetsrSheef 2 FiledAug. 21, 1952 IN V EN TOR. fr'w/w 16 5. 000427700 BY AT ZURNEYS PatentedNov. 4, 1953 PUSH-OUT WINDOW STRUCTURE Francis E. Donathan, Lima, Ohio,assignor to Superior Coach Corporation, Lima, Ohio, a corporation ofOhio Application August 21, 1952, Serial No. 305,665

7 Claims.

This invention relates to knock-out or push out sash for the windows ofpassenger carrying coaches and is intended more particularly for use inconnection with motor driven buses or coaches.

In the use of such coaches it is extremely important to provide windowsthat are capable of being easily opened or knockedmut or pushed out fromwithin the coach which at the same time are of a nature not to invitetampering with or operation by children or others except in the event ofemergencies.

The primary object of the invention is the provision of a swingable orpush-out sash canrying means in a window casing which is easily andquickly operable to cause a release or outward swinging movement thereofto completely uncover the casing opening to permit rapid exit ofpassengers therethrough should an emergency therefor arise.

Another object of the invention is the provision of a push-out window ofthis character having at least two sash members mounted for relativesliding movements in the casing together with means normally locking thesash members against push-out movements and operable by a predeterminedsliding movement of one sash member relative to the other to release thesash members for outward movements together to completely uncover thecasing opening in which they were mounted.

Further objects of the invention will be apparent from the followingdetailed description and from the accompanying drawings, in which:

Fig. 1 is an outside elevation of a device embodying the'inventiondisposed in closed locked position in a window casing opening, parts ofthe casing being broken away.

Fig. 2 is a View similar to Fig. l with the upper sash lowered in lugunlocking position.

Fig. 3 is an enlarged fragmentary section on the line 3-3 in Fig. 1.

Fig. 4 is an enlarged fragmentary section on the line 4-4; in Fig. 2.

Figs. 5 and 6 are enlarged sections respectively on the lines 5-5 and5-8 in Figs. 1 and 2.

Fig. 7 is an enlarged section on the line 1-? in Fig. 2 with the closingunit for the casing opening moved partially outward from the closingposition shown in Fig. 4.

Fig. 8 is a fragmentary enlarged section in perspective of the lockingmeans for the upper sash in connection therewith.

Fig. 9 is an enlarged fragmentary section similar to the upper portionof the section in Fig. 4 showing a modification of the pivot means andshowing in dotted lines the guide strip partially removed from thecasing, and

Fig. 10 is a perspective view of the closing unit for the casing openingremoved from the casing.

Referring to the drawings, i designates the casing structure of a motorcoach or the like forming a window opening 2. Within this opening ateach side and extending substantially its full length is a sash guidestrip 3 having two parallel runways 4 and 5 for respective upper andlower sash members 6 and l. The sash members in the present instance,have metal frames 8 that engage at their outer vertical edges in therespective guideways of the strips 3. Each strip 3, in the presentinstance, is connected at its upper end to the respective side of thecasing by a pivot bolt 9 or the like (Figs. 1, 2, 4 and 6) with suchbolts coaxial, thus permitting an outward swing ing of the guide stripsand sash members carried thereby.- These bolts may be mounted inapertures It in the strips (Fig. 10) or in upwardly opening end slots H(Fig. 9).

The upper sash member 6 is freely slidable in the guide strips, exceptfor a releasable catch means [2 near each upper edge which is springpressed to coact with respective sets of catch steps 13 in the adjacentguide strips (Fig. 8). This sash may be lowered to the bottom of thestrips, as shown in Figs. 3 and 4. The lower sash memher 7, however, isstationarily mounted in the two strips 3 in its lowered position, beingheld set screws It (Fig. 6) or in any other suitable manner.

In the bottom wall It of the casing opening and in close relation to theouter side of the lower sash 1, when in closed position, as shown inFigs. 3 and 4, are mounted, in the present instance, in transverselyspaced relation, two vertical studs or detents ll. These studs aremounted in respeetive sockets l8 in the base of the window casing andeach is normally pressed outward, or held raised in obstructing positionto an outward swinging of the lower sash, by a coiled expansion springis in its socket.

The studs ll are in the vertical plane of the runs 4 of the two guidestrips when such strips are in vertical or closed position, as shown in.Figs. 3 and 4, so that the bottom of the upper sash when lowered willstrike and rest on said lugs.

The weight of the upper sash is not sufficient in itself to lower thestuds I? against the spring pressure, thus making it necessary to applya manual downward pressure to the sash s for such purpose. When suchrelease of the studs has been effected an outward pressure on the lowersash i will cause it and the guide strips 3-3 with the other sash toswing outwardly about the pivots 9 to open escape-position. During suchinitial outward swinging the lower edges of both sash slide over thedepressed studs 5 i.

In the use of a window equipped with the present invention the uppersash is free, except for the catch means 12, to be raised or lowered asmay be desired. Should an associated coach meet with an accident makingit necessary or desirable to effect a hasty exit through a windowopening,a person near the window quickly lowers the upper sash againstthe locking studs ii and in doing so applies sufficient force to thesash to depress the studs out or the path of outward swinging movementor" the lower sash a. Simultaneous with such releasing movement of thestuds an outward pressure should be applied to the lower sash to forceit over the depressed studs. The springs is are preferably of suchstifiness as to be most conveniently depressed by a sudden thrust orlowering of the outer sash 6 against the studs, and the outward pressureon the lower sash must be applied at approximately the same instant soas to swing the lower sash over the studs while depressed or before arebound action raises the studs sufliciently to prevent such swinging.When the lowered sash has been thus released the two sash and associatedguide strips may be swung outwardly sufficient to permit persons toescape from the coach through the window opening. If slots H areprovided in the guide strips 3 for the pivots the strips and sash arepermitted to drop from the casing structure when swung outwardlysufiicient to pass the bottom wall of the opening, thus leaving theopening entirely free and unobstructed for escape purposes.

I wish it understood that my invention is not limited to any specificconstruction or arrangement of the parts, but is capable of numerousmodifications and changes without departing from the spirit of theclaims.

Having described my in ention, I claim:

1. An escape window, comprising a casing forming a window opening, guidestrips mounted in opposite side walls of the opening and transverselymovable outwardly relative thereto, a lower sash and an upper sashcarried by said strips and transversely movable therewith, the up ersashbeing guided by the strips for raising and lowering movementsrelative thereto, at least one detent stud in the lower portion or" thecasing normally standing in position to lock the sash and strips againstoutward movement relative to the casing, said stud being moved tounlocking position by a forceful lowering of the upper sashthereagainst.

2. An escape window, comprising a casin forming a window opening,vertical guide stri; mounted in said opening at each side thereof, pivotmeans connecting the upper ends of said strips and permitting an outwardswinging of the strips, a lower sash connected to and carr ed by saidstrips at their lower ends, an upper sash connected to and guided bysaid strips for raising and lowering movements relative to the lowersash, said strips and sash being swingable together to close or uncoveropening, at least one detent lug in the casing in the path of swingingmovement of the lower sash to normally lock it in closed position, saiddetent lug also being in the path of lowering movement or" the uppersash whereby a predetermined forceful lowering of the upper sash willmove the lug from lower sash locking position and permit outwardswinging of the sash and guide strips from the casing opening.

3. An escape window of the class described, comprising a casing forminga window opening, vertically disposed side guide strips in said openingat opposite sides thereof, casing attaching means for the strips attheir upper ends permitting outward swinging thereof relative to theopening, upper and lower sash carried by and swingable with said strips,the upper sash being vertically slidable in the strips and a lower sashbeing fixed thereto, at least one spring pressed detent mounted in thecasing at the bottom portion or" the opening and normally projected intoposition to lock the sash and strips against outward movement fromclosed position relative to the opening, said detent being in the pathof lowering movement of the upper sash whereby upon a predeterminedforceful lowering thereof the detent is depressed to release the sashand the strips for outward movement during the period of depression.

4. An escape window of the class described, comprising a casing forminga window opening, vertically disposed guide strips in said opening atopposite sides thereof, means swingingly mounting the upper ends of thestrips in the opening, an upper and a lower sash carried at their sideedges by strips, the upper sash being guid r lo movements by saidstrips, releasable means in the casing normally engaging the lower sashto lock it and the guide strips i indow closing positions, last meansbeing released by predetermined lowering movement of the upper sash.

5. An escape window of the class described, comprising a casing forminga window opening, vertically disposed guide strips in said opening atopposite sides thereof, means mounting said strips for outward swingingopening movements, upper and lower sash carried by said strips formovement therewith, and releasable means in the casing for normallylocking said strips and sash against outward opening movement relativeto the window opening, one of said sash being guided for raising andlowering movements in said strips and operable by a predeterminedmovement thereof to engage and release said locking means to permitoutward movements of said strips and sash.

6. A window of the class described, comprising a casing forming a windowopening, a closing unit mounted in said opening and outwardly movablerelative to the casing to uncover a part at least of said opening, saidunit including a guide strip at each side and upper and lower sashcarried by said strips and at least one sash being slidable in thestrips relative to the other, releasable means normally locking the unitagainst outward movement in the opening and operable by a predeterminedmovement of the slidable sash and by pressure therefrom to release saidlocldng means.

7. A combination as called for in claim 6 wherein the locking meanscomprises at least one spring pressed locking lug mounted in the casingand normally having locking engagement with the unit.

FRANCIS E. DONATHAN.

References Cited in the file of this patent UNITED STATES PATENTS Number

